JPH0780030B2 - Method for manufacturing starter rim gear - Google Patents
Method for manufacturing starter rim gearInfo
- Publication number
- JPH0780030B2 JPH0780030B2 JP62180205A JP18020587A JPH0780030B2 JP H0780030 B2 JPH0780030 B2 JP H0780030B2 JP 62180205 A JP62180205 A JP 62180205A JP 18020587 A JP18020587 A JP 18020587A JP H0780030 B2 JPH0780030 B2 JP H0780030B2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- tooth
- teeth
- wall portion
- cylindrical wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H5/00—Making gear wheels, racks, spline shafts or worms
- B21H5/02—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls
- B21H5/025—Internally geared wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/26—Making other particular articles wheels or the like
- B21D53/28—Making other particular articles wheels or the like gear wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H5/00—Making gear wheels, racks, spline shafts or worms
- B21H5/02—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49462—Gear making
- Y10T29/49467—Gear shaping
- Y10T29/49471—Roll forming
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
- Y10T74/1987—Rotary bodies
- Y10T74/19888—External and internal teeth
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gears, Cams (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、鋼薄板から成るスターターリム−歯車を製造
する方法であつて、シヤーレ形の素材から管状に一方の
側へ軸平行に延びる半径方向で最も外側の円筒状の壁部
分を、噛み合い転動接触する歯に冷間で成形する形式の
ものに関する。Description: FIELD OF THE INVENTION The present invention relates to a method for producing a starter rim-gear made of steel sheet, which comprises a shell-shaped material, which is tubular in a radial direction extending axially parallel to one side. The present invention relates to a type in which the outermost cylindrical wall portion is cold-formed into teeth in meshing rolling contact.
従来技術 初めに、本出願人による冷間成形法〔グローブ（Grob）
式成形法〕を説明しておく。Prior Art First of all, the cold forming method by the present applicant [Grob]
Formula forming method] will be described.
冷間成形法によつて、輪郭が互いに異なる外側輪郭と内
側輪郭とが同時に形成される。このために、工作物、こ
こでは管状部分が、内側輪郭に相応する心棒に差嵌めら
れる。工作物は、この状態で工作物送りで作業され、し
かもこの工作物送りでは、工作物は、工作物軸線に沿つ
て移動され、かつ工作物軸線を中心にして回動される。
この工作物送りの間に工作物は、リング状に成形された
圧延ローラによつて外方から加工され、この場合それぞ
れの圧延ローラによつて、輪郭のピツチ及び工作物送り
を規定する迅速な順送りにより衝撃的な個別圧延動作で
行なわれる。このような個別圧延動作は、同じ方向で、
かつ特に輪郭長手方向に延びる方向で行なわれる。この
場合、同じ圧延ローラによつて順次行なわれる個別圧延
動作は、工作物送りを規定するら旋状区域で行なわれ
る。輪郭長手方向で同じ歯の間隙で連続する個別圧延動
作は、工作物における圧延動作の作動に関して部分的に
オーバラツプして行なわれる。それぞれの個別圧延動作
において、材料は、それぞれ比較的小さい工作物区分に
沿つて特に半径方向で心棒の歯間隙で送られる。比較的
肉厚の工作物に関するこのような方法は、スイス連邦特
許第579427号明細書、フランス共和国特許第7538539号
明細書及びドイツ連邦共和国特許出願公開第2549230号
明細書に開示されている。By the cold forming method, the outer contour and the inner contour having different contours are simultaneously formed. For this purpose, the workpiece, here the tubular part, is fitted onto the mandrel, which corresponds to the inner contour. The work piece is operated in this state by the work piece feed, and in this work piece feed, the work piece is moved along the work piece axis and rotated about the work piece axis.
During this workpiece feed, the workpiece is machined from the outside by means of ring-shaped rolling rollers, in which case each rolling roller provides a contour pitch and a rapid feed for defining the workpiece feed. It is performed by shocking individual rolling operation by progressive feeding. Such individual rolling operation is in the same direction,
And especially in a direction extending in the longitudinal direction of the contour. In this case, the individual rolling movements, which are carried out successively by the same rolling roller, are carried out in the spiral zone which defines the workpiece feed. Successive individual rolling movements with the same tooth gap in the longitudinal direction of the contour are carried out partially overlapping with respect to the operation of the rolling movement on the workpiece. In each individual rolling operation, the material is fed along the relatively small workpiece section, especially in the radial tooth gap. Such a method for relatively thick workpieces is disclosed in Swiss Patent No. 579427, French Patent No. 7538539 and German Patent Publication No. 2549230.
自動車内燃機関においては、主に電気的な歯車リム−回
転−スターターが使用される。このようなスターターに
おいては、バツテリーから給電されるモーターが設けら
れており、このモーターは、始動のためにピニオンを駆
動する。このピニオンは、始動過程中に、内燃機関に取
り付けられたスターターリム−歯車と噛み合って転動す
る。即ちスターターリム−歯車の歯も、噛み合い転動接
触する歯を有していなければならない。In motor vehicle internal combustion engines, mainly electric gear rim-rotary-starters are used. In such a starter, a battery-powered motor is provided, which drives the pinion for starting. The pinion rolls in mesh with a starter rim-gear mounted on the internal combustion engine during the starting process. That is, the teeth of the starter rim-gear must also have teeth in meshing rolling contact.
自動車のスターターリム−歯車の歯は、例えば自動車に
使用される薄板製の歯付きベルト車の歯、スプライン軸
のスプライン歯などとは異なって、半径方向で比較的高
く、かつ軸線方向で狭く構成され、即ち相対する歯車
（ピニオン）と噛み合って転動する（噛み合い転動接触
する）歯である。このような噛み合い転動接触する歯
を、例えば薄板製の歯付きベルト車の歯の製造に用いら
れる前記従来の方法で製造することは、困難である。The starter rim of a motor vehicle-the teeth of the gear are configured to be relatively high in the radial direction and narrow in the axial direction, unlike, for example, the teeth of a toothed belt wheel made of a thin plate used in an automobile and the spline teeth of a spline shaft. That is, these teeth are teeth that mesh with rolling gears (pinions) facing each other and roll (engage in rolling contact). It is difficult to manufacture such teeth in meshing rolling contact by the above-mentioned conventional method used for manufacturing the teeth of a toothed belt pulley made of, for example, a thin plate.
発明の課題 本発明の課題は、スターターリム−歯車が試験製造回数
を最小にして、申し分のない再現性をもって経済的に有
利に製造できるようにすることである。OBJECT OF THE INVENTION It is an object of the invention to enable starter rim gears to be manufactured economically with minimal reproducibility and with satisfactory reproducibility.
課題を解決するための手段 前記課題を解決するために本発明の手段では、素材の円
筒状の壁部分を、その外径を減少させつつ冷間で成形し
（冷間変形し）、製造される歯車の歯の外歯の歯先円直
径と製造される歯車の歯の内歯の歯先円直径との差を素
材の円筒状の壁部分の壁厚で割った商が最小で1.6であ
り、製造される歯車の外歯と内歯との歯側面間の最狭箇
所の厚さを素材の円筒状の壁部分の壁厚で割った商が最
大で0.4であるように形成する。Means for Solving the Problems In order to solve the above problems, according to the means of the present invention, a cylindrical wall portion of a raw material is cold-formed (cold deformation) while reducing its outer diameter, and manufactured. The quotient of the difference between the tip circle diameter of the outer tooth of the gear tooth and the tip circle diameter of the inner tooth of the manufactured gear tooth divided by the wall thickness of the cylindrical wall portion of the material is at least 1.6. It is formed such that the quotient obtained by dividing the thickness at the narrowest point between the tooth flanks of the outer and inner teeth of the manufactured gear by the wall thickness of the cylindrical wall portion of the material is 0.4 at the maximum.
発明の効果 本発明の前記手段により、スターターリム−歯車が、手
間のかかる多くの実験（試験製造）を必要とすることな
しに、冷間成形によって著しく高い精度で経済的に製造
できるようになった。EFFECTS OF THE INVENTION The measures of the present invention enable a starter rim-gear to be economically manufactured with significantly higher precision by cold forming without the need for a lot of laborious experimentation (test manufacture). It was
実施態様 本発明による方法の実施態様においては、歯の端部に一
般的に形成される隆起部を部分的に、又は全く排除する
ことが可能である。このような隆起部は、方々で邪魔に
なり、従つて後から転削で取除かれなければならない。Embodiments In an embodiment of the method according to the invention, it is possible to eliminate ridges that are generally formed at the ends of the teeth, either partially or completely. Such ridges are an obstacle for people and must therefore be removed later by milling.
このため本発明の有利な実施態様によれば、素材の円筒
状の壁部分の壁厚を局所的に減少させることによつて、
前記の隆起部が少なくとも部分的に予め補償される。こ
のことにより、早期に生じる困難を全く考慮しなくても
よい。Therefore, according to an advantageous embodiment of the invention, by locally reducing the wall thickness of the cylindrical wall part of the material,
The ridges are at least partially precompensated. With this, it is not necessary to consider the difficulty that occurs early.
隆起部のこのように得られる抑制が依然として妨害と思
える場合には、転削による取除き作業を従来より迅速か
つ調和させて行なうことができる。If the resulting suppression of the ridges still seems to be a hindrance, the removal operation by milling can be carried out more quickly and in a coordinated manner.
さらに、表面硬化可能な鋼薄板を使用する際には付加的
な問題点が生じるが、この問題点は本発明により軽減さ
れる。Furthermore, the use of surface-hardenable steel strips creates additional problems, which are alleviated by the present invention.
それ故に、冷間成形が十分に可能であり、かつたとえば
誘導硬化によつて、表面硬化される鋼薄板を使用するこ
とができる。It is therefore possible to use steel sheets which are sufficiently cold-formed and which are surface-hardened, for example by induction hardening.
実施例 第１図、第２図、第３図及び第８図に示された完成した
スターターリム−歯車１は、本発明の方法により製造さ
れるものであり、つまり、わずかに大きい外径の素材
１′から出発して、シヤーレ状に形成し、次いで底部分
２′と、端面４′を有する円筒状の壁部分３′とを形成
するグローブ式方法で製造される。EXAMPLE The finished starter rim-gear 1 shown in FIGS. 1, 2, 3, and 8 is manufactured by the method of the invention, i.e. with a slightly larger outer diameter. Starting from the blank 1 ', it is produced in the glove-type process in which it is formed into a chalet shape and then the bottom part 2'and the cylindrical wall part 3'having an end face 4'.
この素材１′内に、内側輪郭（第８図参照）に相応する
外側輪郭を有する心棒（図示せず）が差込まれる。次い
で、歯３に相応する環状輪郭を有する圧延工具によつ
て、グローブ式方法と同様に一般的に圧延される。A mandrel (not shown) having an outer contour corresponding to the inner contour (see FIG. 8) is inserted into the blank 1 '. It is then generally rolled in a manner similar to the glove-type method with a rolling tool having an annular contour corresponding to the tooth 3.
この場合、滑らかな底部分２と、該底部分の中心Ｚを中
心に円形の開口部とを有する工作物（歯車１）が形成さ
れる。この場合図面では余計な手間を省くために、底部
分２が平らに示されているが、しかし実際には、押込み
成形部を備えており、このことによつて所望のこわさが
得られる。In this case, a work piece (gear 1) having a smooth bottom portion 2 and a circular opening centered on the center Z of the bottom portion is formed. In this case, in order to save extra effort in the drawing, the bottom part 2 is shown flat, but in practice it is provided with an indentation, which gives the desired stiffness.
正確な寸法比では示してないものの、第３図及び第８図
から明らかなように、歯３は半径方向で高く、軸線方向
で狭く構成されていて、別の歯車（例えばピニオン）の
歯と噛み合い転動接触する。Although it is not shown in the exact dimensional ratio, as is apparent from FIGS. 3 and 8, the tooth 3 is configured to be high in the radial direction and narrow in the axial direction so as to be different from the teeth of another gear (for example, a pinion). Mating and rolling contact.
第３図に示された隆起部４を備える必要がなければ、歯
車を製造した後に転削により取除けばよい。しかし本発
明の有利な実施例によれば、第５図に示すようにほんの
小さな隆起部104を有する工作物101の歯103が得られる
（底部分は符号102で示す）。この場合には、底部分10
2′と、内側に面取りされた補償個所104′を有する円筒
状の壁部分103′とを備えた予め修正された素材101′か
ら出発する。別の実施例では、底部分202′と壁部分20
3′とを備えた素材201′から出発することもでき、しか
もこの壁部分の端面204′は、全幅にわたつて面取りさ
れている。減少部は別の形状、たとえば中空スロートを
有することもできる。If it is not necessary to provide the raised portion 4 shown in FIG. 3, it may be removed by milling after manufacturing the gear. However, according to an advantageous embodiment of the invention, a tooth 103 of the work piece 101 is obtained (the bottom part is indicated by 102) with only a small ridge 104 as shown in FIG. In this case, the bottom part 10
Starting from a pre-modified blank 101 'with 2'and a cylindrical wall portion 103' with an inwardly chamfered compensation point 104 '. In another embodiment, bottom portion 202 'and wall portion 20
It is also possible to start from a blank 201 'with 3'and the end face 204' of this wall part is chamfered over its entire width. The reduction can also have another shape, for example a hollow throat.
第８図には、外歯３の歯先円と中心Ｚとの間の半径Da/2
と、内歯５の歯先円と中心Ｚとの間の半径da/2とが示さ
れており、第９図には素材１′の壁部分３′の厚さｆが
示されている。本発明による圧延工程時には、素材１′
はすでに述べた心棒上で次のように、素材の外径が減少
されて圧延される。つまり、外歯の直径Daと内歯の直径
daとの差を素材１′の厚さｆで割つた商が最少1.6（16/
10）になり、また外歯と内歯との間の歯側面の最狭個所
ｂを素材１′の壁部分３′の厚さｆで割つた商が最大0.
4（4/10）になるようにである。このことによつて、合
理的な作業形式で再現可能な結果が確実に得られ、しか
も第３図に示された隆起部４を必要とするか、必要とし
ないかは無関係である。FIG. 8 shows a radius Da / 2 between the tip circle of the external tooth 3 and the center Z.
And the radius da / 2 between the tip circle of the inner tooth 5 and the center Z are shown, and the thickness f of the wall portion 3'of the blank 1'is shown in FIG. During the rolling process according to the present invention, the material 1 '
Is rolled on the mandrel as described below with the outer diameter of the material reduced. That is, the outer tooth diameter Da and the inner tooth diameter
The minimum quotient obtained by dividing the difference from da by the thickness f of material 1'is 1.6 (16 /
10), and the maximum quotient is obtained by dividing the narrowest point b on the tooth flank between the outer and inner teeth by the thickness f of the wall portion 3'of the blank 1 '.
It seems to be 4 (4/10). This ensures reproducible results in a rational working mode and whether or not the ridge 4 shown in FIG. 3 is required.
さらに、冷間成形時に欠点を生ぜずに、たとえば誘導硬
化による表面硬化が施されている鋼薄板を使用する作業
形式も可能である。さらに、理想的な限界範囲は極めて
簡単な試験によつて検出される。Furthermore, a working mode is also possible in which a steel sheet which has been surface hardened, for example by induction hardening, is used without causing defects during cold forming. Moreover, the ideal limit range is detected by a very simple test.
第１図はスターターリム−歯車を軸方向で見た平面図、
第２図は第１図のII-II線に沿つた断面図、第３図は第
２図の歯３の範囲の拡大詳細図、第４図は第３図の歯の
ための素材の詳細図、第５図は歯の別の実施例を示す第
３図に相応する詳細図、第６図は第５図の歯のための素
材の詳細図、第７図は第６図の変化実施例を示す図、第
８図は第１図に相応する歯３の拡大部分図、第９図は第
８図に相応する歯の素材を示す拡大部分図である。 １……歯車、１′……素材、２・２′……底部分、３…
…歯、３′……壁部分、４……隆起部、４′……端面、
５……内歯、101……工作物、101′……素材、102・10
2′……底部分、103……歯、103′……壁部分、104……
隆起部、104′……補償個所、201′……素材、202′…
…底部分、203′……壁部分、204′……端面FIG. 1 is a plan view of the starter rim-gear as viewed in the axial direction,
2 is a sectional view taken along the line II-II in FIG. 1, FIG. 3 is an enlarged detailed view of the area of the tooth 3 in FIG. 2, and FIG. 4 is a detail of the material for the tooth in FIG. 5 and 5 are detailed views corresponding to FIG. 3 showing another embodiment of the tooth, FIG. 6 is a detailed view of the material for the tooth of FIG. 5, and FIG. 7 is a modification of FIG. FIG. 8 shows an example, FIG. 8 is an enlarged partial view of the tooth 3 corresponding to FIG. 1, and FIG. 9 is an enlarged partial view showing the material of the tooth corresponding to FIG. 1 ... Gear, 1 '... Material, 2.2' ... Bottom part, 3 ...
... tooth 3 '... wall part, 4 ... raised part, 4' ... end face,
5 …… Internal teeth, 101 …… Workpiece, 101 ′ …… Material, 102 ・ 10
2 '... bottom part, 103 ... teeth, 103' ... wall part, 104 ...
Protuberance, 104 '... Compensation point, 201' ... Material, 202 '...
... bottom part, 203 '... wall part, 204' ... end face
Claims (3)
造する方法であって、シャーレ形の素材の一方の側へ軸
平行に管状に延びる半径方向で最も外側の円筒状の壁部
分を、噛み合い転動接触する歯に冷間で成形する形式の
ものにおいて、素材（１′）の円筒状の壁部分（３′）
を、その外径を減少させつつ冷間で成形し、 （イ）製造される歯車（１）の歯の外歯（３）の歯先円
直径（Da）と製造される歯車（１）の歯の内歯（５）の
歯先円直径（da）との差を素材（１′）の円筒状の壁部
分（３′）の壁厚（ｆ）で割った商が最小で1.6であ
り、 （ロ）製造される歯車の外歯と内歯との歯側面間の最狭
箇所（ｂ）の厚さを素材の円筒状の壁部分の壁厚（ｆ）
で割った商が最大で0.4であるように形成することを特
徴とする、スターターリム−歯車を製造する方法。1. A method of manufacturing a starter rim-gear made of a thin steel plate, wherein a radially outermost cylindrical wall portion extending in a tubular shape axially parallel to one side of a petri dish material is meshed. In the cold-forming type of teeth in rolling contact, the cylindrical wall portion (3 ') of the material (1')
Is cold-molded while reducing its outer diameter, and (a) the tooth circle diameter (Da) of the outer teeth (3) of the teeth of the gear (1) to be manufactured and the gear (1) to be manufactured. The quotient of dividing the difference between the inner diameter (da) of the inner tooth (5) of the tooth and the wall thickness (f) of the cylindrical wall portion (3 ') of the material (1') is at least 1.6. (B) The thickness of the narrowest point (b) between the tooth flanks of the outer and inner teeth of the gear to be manufactured is the wall thickness (f) of the cylindrical wall portion of the material.
A method of manufacturing a starter rim-gear, comprising forming a quotient divided by at most 0.4.
起部を減少させるため若しくは排除するために、素材
（101′若しくは201′）の円筒状の壁部分（103′若し
くは203′）の壁厚（ｆ）を局所的に減少させる特許請
求の範囲第１項記載の方法。2. Cylindrical wall portion (103 'or 203') of blank (101 'or 201') for reducing or eliminating unwanted axial ridges of the gear teeth to be manufactured. A method according to claim 1, wherein the wall thickness (f) of the wall is locally reduced.
を表面硬化する特許請求の範囲第１項又は第２項記載の
方法。3. A method according to claim 1 or 2, wherein a tooth made of a steel sheet which is easily surface hardened is surface hardened.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH2966/86A CH670778A5 (en) | 1986-07-24 | 1986-07-24 | |
| CH2966/86-2 | 1986-07-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6330139A JPS6330139A (en) | 1988-02-08 |
| JPH0780030B2 true JPH0780030B2 (en) | 1995-08-30 |
Family
ID=4245646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62180205A Expired - Fee Related JPH0780030B2 (en) | 1986-07-24 | 1987-07-21 | Method for manufacturing starter rim gear |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4796345A (en) |
| JP (1) | JPH0780030B2 (en) |
| CH (1) | CH670778A5 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01165357U (en) * | 1988-05-13 | 1989-11-20 | ||
| US5152061A (en) * | 1992-02-19 | 1992-10-06 | Tesma International Inc. | Cold-forming of toothed wheels from sheet steel |
| US5237744A (en) * | 1992-02-19 | 1993-08-24 | Tesma International Inc. | Method of cold-forming toothed wheels |
| US5203223A (en) * | 1992-02-19 | 1993-04-20 | Tesma International Inc. | Cold-forming of toothed wheels from sheet steel |
| CH685542A5 (en) * | 1992-07-16 | 1995-08-15 | Grob Ernst Fa | A method for producing a hollow workpiece which is at least inside straight or angled profiled to the workpiece axis. |
| JP3371276B2 (en) * | 1995-06-30 | 2003-01-27 | 株式会社久保田鉄工所 | Forming method of disk-shaped material |
| JP2804910B2 (en) * | 1995-09-22 | 1998-09-30 | 日産自動車株式会社 | Method and apparatus for forming cylindrical part with outer peripheral teeth |
| ZA968486B (en) * | 1996-10-08 | 1998-09-30 | Scambia Ind Dev Ag | Jack and method for manufacturing a jack |
| US6238316B1 (en) * | 1999-04-23 | 2001-05-29 | Gary Lee Sturm | Differential axle speed sensing mechanism |
| US6868606B2 (en) * | 2001-11-16 | 2005-03-22 | Wf-Maschinenbau Und Blechformtechnik Gmbh & Co. Kg | Method and apparatus for making a rotation-symmetrical gear member |
| US8230710B2 (en) * | 2005-03-25 | 2012-07-31 | American Axle & Manufacturing, Inc. | Method for forming a slip joint assembly with coated splines |
| US20090215543A1 (en) * | 2008-02-25 | 2009-08-27 | American Axle & Manufacturing, Inc. | Slip yoke with internal splines having permanent coating and related method |
| JP2014077498A (en) * | 2012-10-11 | 2014-05-01 | Exedy Corp | Torque converter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3745851A (en) * | 1971-12-23 | 1973-07-17 | North American Rockwell | Power toothed transmission device |
| US4470290A (en) * | 1981-09-04 | 1984-09-11 | Anderson-Cook, Inc. | Thin-wall sleeve forming |
| US4547179A (en) * | 1982-01-07 | 1985-10-15 | Honda Giken Kogyo Kabushiki Kaisha | Timing belt pulley and method of manufacture |
-
1986
- 1986-07-24 CH CH2966/86A patent/CH670778A5/de not_active IP Right Cessation
-
1987
- 1987-07-20 US US07/075,123 patent/US4796345A/en not_active Expired - Lifetime
- 1987-07-21 JP JP62180205A patent/JPH0780030B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6330139A (en) | 1988-02-08 |
| CH670778A5 (en) | 1989-07-14 |
| US4796345A (en) | 1989-01-10 |
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